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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Summary of Net Sales Attributable to Various Segments | The approximate net sales attributable to hard goods, athletic and sport apparel, athletic and sport footwear and other for the periods presented are set forth as follows:
|  | Fiscal Year |
|  | 2017 |  |  | 2016 |  |  | 2015 |
|  | (In thousands) |
Hard goods |  | $ | 509,618 |  |  | $ | 529,869 |  |  | $ | 534,864 |
Athletic and sport apparel |  |  | 206,816 |  |  |  | 200,476 |  |  |  | 199,109 |
Athletic and sport footwear |  |  | 288,536 |  |  |  | 287,399 |  |  |  | 291,325 |
Other sales |  |  | 4,665 |  |  |  | 3,491 |  |  |  | 3,800 |
Net sales |  | $ | 1,009,635 |  |  | $ | 1,021,235 |  |  | $ | 1,029,098 |
Schedule of Estimated Useful Life of Property and Equipment | Property and equipment are stated at cost and are being depreciated or amortized utilizing the straight-line method over the following estimated useful lives:
Leasehold improvements |  | Shorter of estimated useful life or term of lease
Furniture and equipment |  | 3 – 10 years
Internal-use software |  | 3 – 7 years

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599 + Details
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